How can you determine which of the allele are dominant and which are recessive?

A dominant Allele is the upper case letter and the recessive is lower case for ex Pp the dominant is P and the recessive is p. Hope that helps.=)

The infrared (ir) and the ultraviolet(uv) represent the two extremities of the visible spectrum (400-700nm). while ir represents electromagnetic radiation with wavelengths longer than those of visible light, uv represents wavelengths shorter than visible light

The answer is a if u read the definition it makes sense